Skip to main content

Table 3 Comparison of baseline characteristics of patients available for follow-up versus those not available

From: Impact of oral vitamin D supplementation on serum 25-hydroxyvitamin D levels in oncology

Characteristic

Patients with follow-up data (N = 799)

Patients without follow-up data (N = 852)

p-value

Mean age at presentation (SD)

55.0 (9.8)

55.5 (10.1)

2 sample t-test

0.37

Cancer Site

   

   Breast

182 (52.4)

165 (47.6)

 

   Lung

120 (44.8)

148 (55.2)

 

   Pancreas

60 (38.2)

97 (61.8)

Chi-square

   Colorectal

90 (51.7)

84 (48.3)

0.03

   Prostate

60 (45.5)

72 (54.5)

 

   Others

287 (50.1)

286 (49.9)

 

Gender

   

   Males

266 (42.4)

362 (57.6)

Chi-square

   Females

533 (52.1)

490 (47.9)

< 0.001

Treatment History

   

   Newly Diagnosed

410 (53.3)

359 (46.7)

Chi-square

   Previously Treated

389 (44.1)

493 (55.9)

< 0.001

Stage at Diagnosis

   

   Stage 0

8 (38.1)

13 (61.9)

 

   Stage 1

106 (54.6)

88 (45.4)

 

   Stage 2

164 (49.4)

168 (50.6)

Chi-square

   Stage 3

208 (52.8)

186 (47.2)

0.02

   Stage 4

244 (43.1)

322 (56.9)

 

   Indeterminate

69 (47.9)

75 (52.1)

 
  1. SD = Standard Deviation
  2. Numbers in parenthesis for cancer site, gender, treatment history and stage at diagnosis are row percentages